智能SFP光模块数字诊断功能的实现  

Realization of Digital Diagnostics for SFP Optical Transceivers

作　　者：吴旭[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2006年第11期156-159,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：湖北省自然科学基金资助项目(2004ABA045)

摘　　要：从智能SFP光模块在各种网络中的实际应用角度出发,首先分析了智能SFP光模块数字诊断功能的作用,介绍了SFF-8472协议体系结构和数字电位器的基本原理。而后完成模块内部结构、I2C总线接口和数字诊断监控程序的设计,采用数字电位器,通过其提供的I2C总线接口与PC机通信,使其具有良好性能并满足协议要求。最后提出了该实现方法的优点及存在问题。SFP optical transceivers are applied widely in various kinds of networks. The function of digital diagnostics for SFP optical transceivers is analyzed. The architecture of SFF - 8472 Specification and the principles of digital potentiometer are also introduced. Then the structure of an optical module,I^2C bus interface and the program of digital diagnostics on PC are designed, which adopt digital potentiometer to communicate with PC by I^2C bus and monitor the status inside an optical module through visual interface. This transceiver can meet the requirement of SFF - 8472. Some good qualities and existing problems are raised at last.

关 键 词：智能SFP光模块 数字诊断 数字电位器 I^2C总线 

分 类 号：TP381[自动化与计算机技术—计算机系统结构]